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requestutil.go
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requestutil.go
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// Package oba - One Bus Away Go Api https://onebusaway.org/
// Author: Seth T <setheck@gmail.com>
package oba
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
)
func makeGetRequest(url string) ([]byte, error) {
resp, err := http.Get(url)
if err != nil {
return nil, errors.New("error making request: " + err.Error())
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, errors.New("error reading body: " + err.Error())
}
return body, nil
}
func handleResponse(r *Response) error {
if r.Code != http.StatusOK {
return fmt.Errorf("code: %d %v", r.Code, r.Text)
}
return nil
}
func handleAltResponse(r *AltResponse) error {
if r.Code != http.StatusOK {
return fmt.Errorf("code: %d %v", r.Code, r.Text)
}
return nil
}
func unmarshalResponse(data []byte) *Response {
response := &Response{}
err := json.Unmarshal(data, response)
if err != nil {
fmt.Println("error un-marshaling response", err)
}
return response
}
func unmarshalAltResponse(data []byte) *AltResponse {
response := &AltResponse{}
err := json.Unmarshal(data, response)
if err != nil {
fmt.Println("error un-marshaling response", err)
}
return response
}
func requestAndHandle(u, errmsg string) (*Response, error) {
body, err := makeGetRequest(u)
if err != nil {
return nil, errors.New(errmsg + err.Error())
}
response := unmarshalResponse(body)
if err := handleResponse(response); err != nil {
return nil, errors.New(errmsg + err.Error())
}
return response, nil
}
func requestAndHandleAlt(u, errmsg string) (*AltResponse, error) {
body, err := makeGetRequest(u)
if err != nil {
return nil, errors.New(errmsg + err.Error())
}
response := unmarshalAltResponse(body)
if err := handleAltResponse(response); err != nil {
return nil, errors.New(errmsg + err.Error())
}
return response, nil
}